According to Young, Edwards looked to abortion as a way out but soon planned a cover-up to hide Hunter from the hawk eyes of the media and his cancer-stricken wife, Elizabeth.
"There was a whole series of calls of how do we deal with this," Young said. "This was no longer an affair. This was going to be, you know, at least, at the minimum, a year-long commitment. And it was going to take much larger resources than we had."
Watch "20/20" Friday at 10 p.m. ET and visit the "20/20" Web site Friday to follow the money trail of Edwards' benefactors, who provided cash, private jets and secluded mansions that were used to hide Edwards' pregnant mistress